Characteristics and outcomes of youth with functional seizures attending intensive interdisciplinary pain treatment

•Somatic and psychiatric comorbidities are common in youth with functional seizures.•Eating and weight disturbances are also prevalent.•Intensive interdisciplinary pain treatment may be effective for youth with FS. Functional seizures (FS) can be debilitating and negatively impact quality of life. Yet intervention research for FS is limited, especially for youth. This study examined clinical characteristics and outcomes of youth with FS (13–23 years) presenting to a pediatric intensive interdisciplinary pain treatment (IIPT) program in the midwestern United States. Sixty youth (mean age = 16.5 years; 83.3 % female) met inclusion criteria. At intake, comorbid chronic pain, somatic symptoms, autonomic dysfunction, eating and weight disturbances, and mental health concerns were common. Despite this high symptom burden, youth with FS reported significant improvements in functioning measured with the Functional Disability Inventory, t(53) = 9.80, p